Install an Additional Domain Controller by Using the Windows Interface

07/02/2012

5 minutes to read

In this article

Applies To: Windows Server 2008, Windows Server 2008 R2

You can use this procedure to add the Active Directory Domain Services (AD DS) server role to a server to create a domain controller in an existing domain. You can complete this procedure by using the Windows graphical user interface (GUI).

You can click Use advanced mode installation to see additional installation options. Specifically, click Use advanced mode installation if you want to install from media or identify the source domain controller for Active Directory replication.

On the Operating System Compatibility page, review the warning about the default security settings for Windows Server 2008 domain controllers, and then click Next.

On the Choose a Deployment Configuration page, click Existing forest, click Add a domain controller to an existing domain, and then click Next.

On the Network Credentials page, type the name of any existing domain in the forest where you plan to install the additional domain controller. Under Specify the account credentials to use to perform the installation, click My current logged on credentials or click Alternate credentials, and then click Set. In the Windows Security dialog box, provide the user name and password for an account that can install the additional domain controller. To install an additional domain controller, you must be a member of the Enterprise Admins group or the Domain Admins group. When you are finished providing credentials, click Next.

On the Select a Domain page, select the domain of the new domain controller, and then click Next.

On the Select a Site page, select a site from the list or select the option to install the domain controller in the site that corresponds to its IP address, and then click Next.

On the Additional Domain Controller Options page, make the following selections, and then click Next:

DNS server: This option is selected by default so that your domain controller can function as a DNS server. If you do not want the domain controller to be a DNS server, clear this option.

Note

If you select the option to make this domain controller a DNS server, you might receive a message that indicates that a DNS delegation for the DNS server could not be created and that you should manually create a DNS delegation to the DNS server to ensure reliable name resolution. If you are installing an additional domain controller in either the forest root domain or a tree root domain, you do not have to create the DNS delegation. In this case, click Yes, and disregard the message.

- **Global Catalog**: This option is selected by default. It adds the global catalog, read-only directory partitions to the domain controller, and it enables global catalog search functionality.
- **Read-only domain controller**. This option is not selected by default. It makes the additional domain controller a read-only domain controller (RODC).

If you selected Use advanced mode installation on the Welcome page, the Install from Media page appears. You can provide the location of installation media to be used to create the domain controller and configure AD DS, or you can have all source replication occur over the network. Note that some data will be replicated over the network even if you install from media. For information about using this method to install the domain controller, see Installing an Additional Domain Controller by Using IFM.

If you selected Use advanced mode installation on the Welcome page, the Source Domain Controller page appears. Click Let the wizard choose an appropriate domain controller or click Use this specific domain controller to specify a domain controller that you want to provide as a source for replication to create the new domain controller, and then click Next. If you do not choose to install from media, all data will be replicated from this source domain controller.

On the Location for Database, Log Files, and SYSVOL page, type or browse to the volume and folder locations for the database file, the directory service log files, and the SYSVOL files, and then click Next.

Windows Server Backup backs up the directory service by volume. For backup and recovery efficiency, store these files on separate volumes that do not contain applications or other nondirectory files.

On the Directory Services Restore Mode Administrator Password page, type and confirm the restore mode password, and then click Next. This password must be used to start AD DS in Directory Services Restore Mode (DSRM) for tasks that must be performed offline.

On the Summary page, review your selections. Click Back to change any selections, if necessary.

To save the settings that you have selected to an answer file that you can use to automate subsequent Active Directory operations, click Export settings. Type the name for your answer file, and then click Save.

When you are sure that your selections are accurate, click Next to install AD DS.

Note

If you are installing an additional domain controller in a child domain and you are using child domain credentials, the Windows Security dialog box appears because access is denied in the parent domain to update the DNS delegation in the parent zone. In this case, click the other user icon and provide administrator credentials for the parent domain, and then click OK.